Effectiveness of a Participatory Physical and Psychosocial Intervention to Balance the Demands and Resources of Industrial Workers: A Clusterrandomized Controlled Trial

Nidhi Gupta, Christian Dyrlund Wåhlin-Jacobsen, Johan Simonsen Abildgaard, Louise Nøhr Henriksen, Karina Nielsen, Andreas Holtermann

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Objectives: The aim of this study was to evaluate the effectiveness of a participatory physical and psychosocial workplace intervention (known as PIPPI) on work ability and recovery among industrial workers.
Methods: Eligible workers were cluster-randomized into intervention (N=193) and control (N=222) groups. Intervention group members participated in three workshops where they mapped positive and negative aspects of their physical and psychosocial work environment and developed action plans addressing the highlighted issues, which were subsequently implemented by the participants. Questionnaire-based data on work ability and recovery were collected at baseline and 8-, 10- and 12-month follow-up. Data on productivity, well-being, mental health, and physical demands and resources were collected at baseline and 12-month follow-up.
Results: The intervention was delivered and received as planned (100% planned workshops conducted, 69% [standard deviation (SD) 7%] participation in workshops) and with a response rate of 76% (SD 8%) to the questionnaires. No significant between-group improvements for any of the outcomes were found in intention-to-treat
multi-level mixed models. On the contrary, tendencies were observed for poorer recovery and reduced work ability in the intervention compared to control group.
Conclusion: The intervention did not improve the outcomes. This result can have several explanations, such as a regression-toward-the-mean effect or that the intervention might have put an additional burden on the workers already facing high work demands. In addition, there may have been an insufficient match between the intervention
components implemented and the predetermined outcomes, and implementation may have been unsuccessful. These potential explanations need to be investigated using process evaluation data.
Tidsskrift Scandinavian Journal of Work, Environment & Health
Udgave nummer1
Sider (fra-til)58-68
Antal sider11
StatusUdgivet - 2018


  • Action plan
  • Effect evaluation
  • Ergonomics
  • Participation
  • Participatory intervention
  • Physical intervention
  • RCT
  • Recovery
  • Visual mapping
  • Work ability